8020040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{28643}}^1$

素因数の和:28661

約数の個数: 32

約数和(自身を含む): 20623680

約数和(自身を除く): 12603640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 28643, 57286, 114572, 143215, 200501, 229144, 286430, 401002, 572860, 802004, 1002505, 1145720, 1604008, 2005010, 4010020, 8020040]

約数ペア:

[(1, 8020040), (2, 4010020), (4, 2005010), (5, 1604008), (7, 1145720), (8, 1002505), (10, 802004), (14, 572860), (20, 401002), (28, 286430), (35, 229144), (40, 200501), (56, 143215), (70, 114572), (140, 57286), (280, 28643)]